S-97832A165 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for high-stress applications.
• Precise alignment and smooth rotation ensured by the 1/4" diameter shoulder with controlled tolerances, reducing wear on mating parts.
• Reliable, fine-thread engagement with the 10-32 UNF thread and Class 3A fit, providing vibration resistance and secure fastening.
• Easy installation and removal using the 1/8" hex socket drive and knurled head, offering superior grip and torque transmission.
• Compliance with major industry standards including ASME B18.3, ensuring dimensional consistency and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical needs in precision assemblies where alignment, durability, and corrosion resistance are paramount. The 1/4" shoulder length acts as a precise pivot or spacer, minimizing misalignment and wear in rotating machinery, jigs, and fixtures. Its 10-32 UNF fine thread and Class 3A fit provide excellent resistance to loosening under vibration, making it ideal for automotive, aerospace, and electronic enclosures. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures it withstands high loads without failure. The hex socket drive and knurled head texture facilitate secure tool engagement in confined spaces, enhancing assembly efficiency and reliability in demanding industrial applications.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with a Class 3A thread fit for precise engagement. The shoulder diameter is 1/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 1/8" with a tolerance of -0.005" to 0.005", ensuring high dimensional accuracy. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming its suitability for regulated and high-performance industrial use.